Mobile work machine comprising a bracing device

Abstract

A mobile work machine includes a chassis that has a traveling gear and a bracing device that is arranged on the chassis and can be braced on a support such as to raise the chassis. The traveling gear includes at least one traveling gear part, the relative position and/or inclination of which with respect to the chassis can be varied during the bracing process. At least one position or inclination sensor is arranged on the traveling gear part, the output signal of the sensor being an actual measure of the position or the inclination of the traveling gear part relative to a reference system that is stationary on the chassis or stationary on the ground. In addition, an evaluation unit is provided, which responds to the output signal of the at least one position or inclination sensor.

The invention claimed is: 
     
       1. A mobile work machine with a chassis comprising a running gear and a bracing device disposed on the chassis and supportable on a base for raising the chassis, wherein the running gear comprises at least one running gear part that is variable in its position or tilt relative to the chassis during the bracing process, wherein at least one position sensor or tilt sensor is disposed on the running gear part, whose output signal forms an actual measure for the position or the tilt of the running gear part relative to a reference system that is fixed relative to the vehicle or relative to the Earth, and wherein additionally an evaluation unit that is responsive to the output signal of the at least one position sensor or tilt sensor is provided to determine a numerical measure for the bracing state or the lifting state of the chassis. 
     
     
       2. The mobile work machine as claimed in  claim 1 , wherein the evaluation unit comprises a comparator for carrying out a comparison of the at least one actual measure for the position or the tilt of the running gear part with a respective specified target value, whose output signal forms a measure for the bracing state or the lifting state of the chassis. 
     
     
       3. The mobile work machine as claimed in  claim 1 , wherein the tilt sensor is disposed on an angle-changing running gear part that is preferably in the form of a control element or of a stabilizer. 
     
     
       4. The mobile work machine as claimed in  claim 1 , wherein the position sensor is disposed on a distance-changing running gear part that is preferably in the form of a shock absorber or of a wheel suspension element. 
     
     
       5. The mobile work machine as claimed in  claim 4 , wherein the position sensor is in the form of a distance sensor or of a proximity sensor that is disposed on a reference section that is fixed relative to the chassis or relative to the Earth. 
     
     
       6. The mobile work machine as claimed in  claim 1 , wherein the position sensor is in the form of a distance sensor or of a proximity sensor that is disposed at a point that is fixed relative to the chassis and that is aligned to a reference section that is fixed relative to the running gear or relative to the Earth. 
     
     
       7. The mobile work machine as claimed in  claim 6 , wherein the reference section that is fixed relative to the running gear is disposed on a shock absorber or on a wheel suspension element. 
     
     
       8. The mobile work machine as claimed in  claim 5 , wherein the distance sensor comprises a control cable sensor, an ultrasonic source or a laser light source as a signal source. 
     
     
       9. The mobile work machine as claimed in  claim 1 , wherein the chassis supports a concrete pump at the rear axle with a material output container and a concrete distribution boom and a delivery line connected to the concrete pump and led over the concrete distribution boom. 
     
     
       10. A mobile work machine with a chassis comprising a running gear and a bracing device disposed on the chassis and supportable on a base for raising the chassis, wherein the running gear comprises at least one running gear part that is variable in its position and tilt relative to the chassis during the bracing process, wherein at least one position sensor and at least one tilt sensor are disposed on the running gear part, whose output signals form an actual measure for the position and the tilt, respectively, of the running gear part relative to a reference system that is fixed relative to the vehicle or relative to the Earth, and wherein additionally an evaluation unit that is responsive to the output signal of the at least one position sensor and the at least one tilt sensor is provided to determine a numerical measure for the bracing state or the lifting state of the chassis.